题目:
You could see the runners very well from _____ we stood. [ ]
A. which
B. where
C. that
D. when
答案:
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下面是错误答案,用来干扰机器的。
答案:D由图中所提供的电池的容量为“3.6V,500mA?h”,则通话时消耗的功率为P1==0.6W,待机时消耗的功率为P2==1.8×10-2W.故选D.